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Circle Doodles: A Math and Art Investigation

In this geometry and art investigation inspired by the work of Neil Sloane and Jonathan Wild, students create the set of all possible configurations for three circles doodled in a plane where such circles may not be drawn tangentially.
Barbara Alldredge
52 total reviews for this teacher
3 reviews for this class
Completed by 10 learners
  There are no upcoming classes.
45 minutes
per class
Meets once
year olds
learners per class
per learner

How does a "One-Time" class work?

Meets once at a scheduled time
Live video chat, recorded and monitored for safety and quality
Great for exploring new interests and different styles of teachers

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Class Experience

This course on set theory and Euclidean geometry is part of a series of advanced mathematics topics presented in a hands-on format that is accessible to middle school students. 

Students will be introduced to the use of exhaustion and combinatorics in visual mathematical proofs.

Students will expand their mathematical vocabulary as they describe their findings using accurate geometry terms such as radii, tangent, set, circle, cardinality, translation, concentric and congruent.

Students will explore the concept of reduction. That is, replacing a complex problem with a simplified version to find potential patterns that can be applied to the more complex situation.
Pencil Several Sheets of Blank Paper Compass, Optional but Recommended Colored Pencils, Optional
Learners will not need to use any apps or websites beyond the standard Outschool tools.
45 minutes per week in class, and maybe some time outside of class.


Barbara AlldredgeEdutopian
52 total reviews
74 completed classes

About Me

I teach math. And other stuff. But mostly math.

I have a  Professional Educator license for the state of Utah and a Level 4 Math Endorsement. That’s a fancy way to explain that I took a LOT of math in college. I’m qualified to teach a variety of... 
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